A fun kawaii cute joke on the pun of kitty / kit-tea. A glass tea cup, with a tea bag and a few fish inside making it look a bit like a fish bowl, with a kitten behind the tea cup looking in.
Available to buy at the following online stores:
You can find the design on t-shirts in most stores, but also on other products e.g. hoodies, mugs, clocks, duvet covers, shower curtains, bags, phone cases, notebooks etc.